/* --- CSS Variables --- */
:root {
    --bg-light: #f8fafc; /* Very light slate */
    --bg-white: #ffffff;
    --text-main: #0f172a; /* Slate 900 */
    --text-muted: #475569; /* Slate 600 */
    --accent: #2563eb; /* Royal Blue */
    --accent-hover: #1d4ed8;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.05);
}

/* --- Base Styles --- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { 
    font-family: 'Inter', sans-serif; 
    color: var(--text-main); 
    background-color: var(--bg-light);
    line-height: 1.6; 
}

/* --- Typography --- */
h1, h2, h3, h4 { font-weight: 800; line-height: 1.2; letter-spacing: -0.02em; }
p { color: var(--text-muted); }
.section-title { font-size: 2.5rem; text-align: center; margin-bottom: 3rem; }

/* --- Navigation --- */
nav {
    display: flex; justify-content: space-between; align-items: center;
    padding: 1.5rem 8%; position: sticky; top: 0; 
    background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border); z-index: 1000;
}
.logo { font-weight: 800; font-size: 1.25rem; }
.nav-links { display: flex; list-style: none; align-items: center; gap: 1rem; }
.nav-links a { text-decoration: none; color: var(--text-main); font-weight: 500; font-size: 0.95rem; transition: color 0.2s; }
.nav-links a:hover { color: var(--accent); }
.cta-btn { background: var(--text-main); color: var(--bg-white) !important; padding: 0.6rem 1.2rem; border-radius: 6px; }
.cta-btn:hover { background: var(--accent); }

/* --- Hero Section --- */
.hero { 
    padding: 6rem 8%; 
    background-color: var(--bg-white);
    background-image: radial-gradient(var(--border) 1px, transparent 1px);
    background-size: 24px 24px; /* Technical grid look */
    border-bottom: 1px solid var(--border);
}
.hero-container { display: flex; align-items: center; gap: 4rem; max-width: 1200px; margin: 0 auto; }
.profile-frame {
    width: 280px; height: 280px; flex-shrink: 0;
    border-radius: 50%; overflow: hidden;
    border: 4px solid var(--bg-white);
    box-shadow: 0 0 0 2px var(--border), var(--shadow-md);
}
.profile-pic { width: 100%; height: 100%; object-fit: cover; }
.tag-group { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.tag { font-size: 0.75rem; font-weight: 700; color: var(--accent); background: #eff6ff; padding: 0.3rem 0.8rem; border-radius: 20px; text-transform: uppercase; letter-spacing: 0.05em; }
.hero-content h2 { font-size: clamp(2.5rem, 4vw, 4rem); margin-bottom: 1.5rem; }
.hero-content p { font-size: 1.1rem; max-width: 600px; margin-bottom: 2.5rem; }
.highlight { color: var(--accent); }

/* Buttons */
.hero-btns { display: flex; gap: 1rem; }
.primary-btn, .secondary-btn { padding: 0.8rem 1.5rem; border-radius: 8px; text-decoration: none; font-weight: 600; transition: all 0.2s; }
.primary-btn { background: var(--accent); color: var(--bg-white); border: 1px solid var(--accent); }
.primary-btn:hover { background: var(--accent-hover); box-shadow: var(--shadow-md); }
.secondary-btn { background: var(--bg-white); color: var(--text-main); border: 1px solid var(--border); }
.secondary-btn:hover { border-color: var(--text-main); }

/* --- Education Section --- */
#education { 
    padding: 0 8%; 
    max-width: 1200px; 
    margin: -3.5rem auto 4rem; /* Pulls the grid up over the hero section */
    position: relative; 
    z-index: 10; 
}

.edu-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
    gap: 1.5rem; 
}

.edu-card { 
    background: var(--bg-white); 
    padding: 2.5rem 2rem; 
    border-radius: 12px; 
    border: 1px solid var(--border); 
    box-shadow: var(--shadow-sm); 
    display: flex; 
    flex-direction: column; 
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease; 
}

.edu-card:hover { 
    transform: translateY(-5px); 
    box-shadow: var(--shadow-md); 
    border-color: var(--accent); 
}

.edu-date { 
    font-size: 0.75rem; 
    font-weight: 800; 
    color: var(--accent); 
    text-transform: uppercase; 
    letter-spacing: 0.05em; 
    margin-bottom: 0.8rem; 
    display: block; 
}

.edu-card h3 { 
    font-size: 1.25rem; 
    margin-bottom: 0.2rem; 
    color: var(--text-main); 
}

.edu-card h4 { 
    font-size: 0.9rem; 
    font-weight: 600; 
    color: var(--text-muted); 
    margin-bottom: 1rem; 
}

.edu-card p { 
    font-size: 0.9rem; 
    margin-bottom: 1.5rem; 
    flex-grow: 1; 
}

.edu-tags { 
    display: flex; 
    flex-wrap: wrap; 
    gap: 0.5rem; 
}

.edu-tags span { 
    background: #eff6ff; 
    color: var(--accent); 
    font-size: 0.75rem; 
    padding: 0.3rem 0.6rem; 
    border-radius: 6px; 
    font-weight: 600; 
    border: 1px solid #dbeafe;
}

/* Mobile Adjustment for Education Grid */
@media (max-width: 768px) {
    #education { margin: 2rem auto; padding: 0 5%; }
    .edu-grid { grid-template-columns: 1fr; }
}

/* --- Projects Section --- */
#projects { padding: 5rem 8%; background: var(--bg-white); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.project-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2.5rem; max-width: 1200px; margin: 0 auto; }
.project-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: transform 0.3s, box-shadow 0.3s; display: flex; flex-direction: column; }
.project-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: #cbd5e1; }
.project-info { padding: 2rem; flex-grow: 1; display: flex; flex-direction: column; }
.project-meta { font-size: 0.75rem; font-weight: 700; color: var(--accent); text-transform: uppercase; margin-bottom: 0.5rem; letter-spacing: 0.05em; }
.project-info h3 { font-size: 1.3rem; margin-bottom: 1rem; }
.project-info p { font-size: 0.95rem; margin-bottom: 1.5rem; flex-grow: 1; }
.tags span { font-size: 0.75rem; background: var(--bg-light); color: var(--text-muted); padding: 0.4rem 0.8rem; border-radius: 6px; border: 1px solid var(--border); margin-right: 0.5rem; display: inline-block; margin-bottom: 0.5rem;}

/* --- Experience Timeline --- */
#experience { padding: 6rem 8%; max-width: 900px; margin: 0 auto; }
.timeline { border-left: 2px solid var(--border); padding-left: 2.5rem; }
.timeline-item { margin-bottom: 4rem; position: relative; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-item::before { content: ''; position: absolute; left: -2.5rem; top: 0; width: 14px; height: 14px; border-radius: 50%; background: var(--bg-white); border: 3px solid var(--accent); transform: translateX(-40%); }
.timeline-item .date { display: inline-block; font-size: 0.85rem; font-weight: 600; color: var(--accent); background: #eff6ff; padding: 0.3rem 0.8rem; border-radius: 20px; margin-bottom: 1rem; }
.timeline-item h3 { font-size: 1.4rem; margin-bottom: 0.2rem; }
.timeline-item h4 { font-size: 1rem; font-weight: 500; color: var(--text-muted); margin-bottom: 1rem; }

/* --- Footer --- */
footer { background: var(--text-main); color: var(--bg-white); padding: 6rem 8% 3rem; text-align: center; }
.footer-content { max-width: 800px; margin: 0 auto; }
.footer-content h2 { margin-bottom: 1rem; font-size: 2rem; }
.footer-content p { color: #94a3b8; margin-bottom: 3rem; }
.footer-links { display: flex; flex-direction: column; gap: 1.5rem; align-items: center; margin-bottom: 4rem; }
.email-link { font-size: clamp(1.5rem, 3vw, 2.5rem); font-weight: 800; color: var(--bg-white); text-decoration: none; border-bottom: 2px solid transparent; transition: border-color 0.2s; }
.email-link:hover { border-color: var(--accent); }
.social-link { color: var(--accent); text-decoration: none; font-weight: 600; font-size: 1.1rem; }
.social-link:hover { text-decoration: underline; }
.copyright { font-size: 0.85rem; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 2rem; }

/* --- Mobile Responsiveness --- */
.menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.menu-toggle .bar { width: 25px; height: 3px; background-color: var(--text-main); transition: 0.3s; }

/* --- Add this to your existing style.css --- */

/* Skills Section */
#skills { padding: 5rem 8%; background: var(--bg-white); border-top: 1px solid var(--border); }
.skills-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; max-width: 1200px; margin: 0 auto; }
.skill-category { background: var(--bg-light); padding: 2rem; border-radius: 12px; border: 1px solid var(--border); }
.skill-category h3 { font-size: 1.2rem; margin-bottom: 1.5rem; color: var(--accent); }
.skill-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.skill-tags span { background: var(--bg-white); border: 1px solid var(--border); padding: 0.4rem 0.8rem; border-radius: 6px; font-size: 0.85rem; font-weight: 500; color: var(--text-main); }

/* Download Resume Button */
.resume-btn { background: #e2e8f0; color: var(--text-main); border: none; }
.resume-btn:hover { background: #cbd5e1; }

/* Open Modal Button */
.open-modal-btn { background: none; border: none; color: var(--accent); font-weight: 600; font-size: 0.95rem; cursor: pointer; text-align: left; margin-top: 1rem; padding: 0; display: inline-flex; align-items: center; transition: color 0.2s; }
.open-modal-btn:hover { color: var(--accent-hover); text-decoration: underline; }

/* Modal Styling */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(15, 23, 42, 0.8); backdrop-filter: blur(5px); display: flex; align-items: center; justify-content: center; z-index: 2000; opacity: 0; visibility: hidden; transition: all 0.3s ease; }
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal-content { background: var(--bg-white); width: 90%; max-width: 700px; border-radius: 12px; padding: 3rem; position: relative; transform: translateY(20px); transition: all 0.3s ease; max-height: 90vh; overflow-y: auto; }
.modal-overlay.active .modal-content { transform: translateY(0); }
.close-modal { position: absolute; top: 1.5rem; right: 1.5rem; background: none; border: none; font-size: 2rem; line-height: 1; color: var(--text-muted); cursor: pointer; transition: color 0.2s; }
.close-modal:hover { color: #ef4444; }
.modal-body { margin-top: 1.5rem; color: var(--text-muted); }
.modal-body p { margin-bottom: 1rem; }
.modal-body ul { margin-left: 1.5rem; margin-bottom: 1.5rem; }
.modal-body li { margin-bottom: 0.5rem; }

/* --- Project Images --- */
.project-image-container {
    height: 200px;
    width: 100%;
    overflow: hidden; /* Keeps the zoom effect inside the box */
    border-bottom: 1px solid var(--border);
    background: var(--bg-light); /* Fallback color while image loads */
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* CRITICAL: This crops the image perfectly without stretching it */
    transition: transform 0.4s ease; /* Smooth animation setup */
}

/* Add a subtle zoom effect when you hover over the card */
.project-card:hover .project-img {
    transform: scale(0.95);
}

/* --- Certifications Section --- */
#certificates {
    padding: 5rem 8%;
    background: var(--bg-light); /* Keeps separation from white sections */
    border-top: 1px solid var(--border);
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.cert-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cert-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: #cbd5e1;
}

.cert-header {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.cert-badge {
    width: 65px;
    height: 65px;
    object-fit: contain;
    background: var(--bg-light);
    border-radius: 8px;
    padding: 5px;
    border: 1px solid var(--border);
}

.cert-details h3 {
    font-size: 1.15rem;
    margin-bottom: 0.25rem;
    color: var(--text-main);
}

.cert-details .issuer {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 0.2rem;
}

.cert-details .date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.cert-actions {
    margin-top: auto; /* Pushes buttons to the bottom evenly */
    display: flex;
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

/* Certificate Buttons */
.cert-btn-solid, .cert-btn-outline {
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    text-align: center;
    transition: all 0.2s ease;
    flex: 1; /* Makes buttons stretch evenly */
}

.cert-btn-solid {
    background: var(--bg-light);
    color: var(--text-main);
    border: 1px solid var(--border);
}

.cert-btn-solid:hover {
    background: #e2e8f0;
    border-color: #cbd5e1;
}

.cert-btn-outline {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
}

.cert-btn-outline:hover {
    background: var(--accent);
    color: var(--bg-white);
}

/* Mobile Adjustments for Modal & Skills */
@media (max-width: 768px) {
    #skills { padding: 4rem 5%; }
    .modal-content { padding: 2rem; width: 95%; }
}

/* --- Mobile Responsiveness & Hamburger Animation --- */

/* 1. Global Hamburger Setup (Hidden on Desktop) */
.menu-toggle { 
    display: none; 
    flex-direction: column; 
    gap: 5px; 
    cursor: pointer; 
    z-index: 1001; /* Keeps it above the mobile menu */
}

.menu-toggle .bar { 
    width: 25px; 
    height: 3px; 
    background-color: var(--text-main); 
    transition: all 0.3s ease-in-out; 
}

/* Transform into an 'X' when active */
.menu-toggle.is-active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.menu-toggle.is-active .bar:nth-child(2) {
    opacity: 0;
}
.menu-toggle.is-active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* --- Announcement Banner --- */
.announcement-banner {
    background-color: var(--accent); 
    color: var(--bg-white);
    text-align: center;
    padding: 0.6rem 5%;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    position: relative;
    z-index: 1002;
}

/* Pulsing Green 'Available' Dot */
.status-dot {
    width: 8px;
    height: 8px;
    background-color: #22c55e; /* Vibrant Green */
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
    animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
    0% { 
        transform: scale(0.95); 
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7); 
    }
    70% { 
        transform: scale(1); 
        box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); 
    }
    100% { 
        transform: scale(0.95); 
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); 
    }
}

/* Mobile Adjustment for the Banner */
@media (max-width: 768px) {
    .announcement-banner {
        font-size: 0.75rem;
        padding: 0.8rem 5%;
        flex-direction: row;
        line-height: 1.4;
    }
}

/* 2. Mobile Specific Rules (Screens smaller than 768px) */
@media (max-width: 768px) {
    /* Nav */
    .menu-toggle { display: flex; } /* Show hamburger on mobile */
    
    .nav-links { 
        position: fixed; top: 70px; left: -100%; flex-direction: column; 
        background: var(--bg-white); width: 100%; text-align: center; 
        padding: 2rem 0; box-shadow: var(--shadow-md); transition: 0.3s ease; 
        border-bottom: 1px solid var(--border); 
    }
    .nav-links.active { left: 0; }
    .nav-links li { margin: 1rem 0; }
    
    /* Hero */
    .hero { padding: 4rem 5%; text-align: center; }
    .hero-container { flex-direction: column; gap: 2.5rem; }
    .tag-group { justify-content: center; }
    .hero-content p { margin: 0 auto 2rem; }
    .hero-btns { justify-content: center; flex-direction: column; }
    .profile-frame { width: 220px; height: 220px; }
    
    /* Metrics */
    #metrics { margin: 2rem auto; padding: 0 5%; }
    .metrics-grid { grid-template-columns: 1fr; }
    
    /* Skills, Projects & Timeline */
    #skills { padding: 4rem 5%; }
    .modal-content { padding: 2rem; width: 95%; }
    #projects { padding: 4rem 5%; }
    #experience { padding: 4rem 5%; }
    .timeline { padding-left: 1.5rem; }
    .timeline-item::before { left: -1.5rem; transform: translateX(-40%); }
    
    /* Footer */
    footer { padding: 4rem 5% 2rem; }
}